SN74AUC245 Datasheet, PDF (1/11 Pages) Texas Instruments – OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS

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FEATURES
• Optimized for 1.8-V Operation and Is 3.6-V I/O
Tolerant to Support Mixed-Mode Signal
Operation
• I_off Supports Partial-Power-Down Mode
Operation
• Sub-1-V Operable
• Max t_pd of 1.7 ns at 1.8 V
• Low Power Consumption, 20-µA Max I_CC
• ±8-mA Output Drive at 1.8 V
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
SN74AUC245
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES419A – JANUARY 2003 – REVISED MARCH 2005
RGY PACKAGE
(TOP VIEW)
1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
10
20
19 OE
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11
DESCRIPTION/ORDERING INFORMATION
This octal bus transceiver is operational at 0.8-V to 2.7-V V_CC, but is designed specifically for 1.65-V to 1.95-V
V_CC operation.
The SN74AUC245 is designed for asynchronous communication between data buses. The device transmits data
from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control
(DIR) input. The output-enable (OE) input can be used to disable the device so the buses are effectively isolated.
To ensure the high-impedance state during power up or power down, OE should be tied to V_CC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
T_A
–40°C to 85°C
ORDERING INFORMATION
PACKAGE ⁽¹⁾
ORDERABLE PART NUMBER
QFN – RGY
Tape and reel
SN74AUC245RGYR
VFBGA – GQN Tape and reel
SN74AUC245GQNR
TOP-SIDE MARKING
MS245
MS245
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2003–2005, Texas Instruments Incorporated